Phys. Rev. A 70, 045802 (2004) [4 pages]Coherent anti-Stokes Raman scattering in isolated air-guided modes of a hollow-core photonic-crystal fiberReceived 21 April 2004; published 18 October 2004 Hollow-core photonic-crystal fibers are shown to offer the unique possibility of coherent excitation and probing of Raman-active vibrations in molecules by isolated air-guided modes of electromagnetic radiation. A 3-cm section of a hollow photonic-crystal fiber is used to prepare isolated air-guided modes of pump and probe fields for a coherent excitation of 2331-cm−1 Q-branch vibrations of molecular nitrogen in the gas filling the fiber core, enhancing coherent anti-Stokes Raman scattering through these vibrations by a factor of 15 relative to the regime of tight focusing. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.045802
DOI:
10.1103/PhysRevA.70.045802
PACS:
42.65.Dr, 42.65.Wi, 42.81.Qb
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